多個分隔符上的postgres 9.4拆分列到新列

Question

引用此SO問題

巢巢

有沒有一種方法可以將基於2個定界符的列拆分為4列？

如果我有一列包含此數據。

11-3-1-4 $72390.00

我怎么做

col1    col2    col3    col4    col5
11      3       1       4       72390.00

另外，我應該保留原始列嗎？

Answer 1

string_to_array()可用於此目的：

select c1[1] as col1, 
       c1[2] as col2, 
       c1[3] as col3,
       c1[4] as col4,
       substr(col5, 2) as col5
from (
   select string_to_array((string_to_array(the_column, ' '))[1], '-') as c1,
          (string_to_array(the_column, ' '))[2] as col5
   from the_table
) t